Ischemic lesions and superficial siderosis in CAA: Partners in crime or innocent bystanders?

Cerebral amyloid angiopathy (CAA), first described in 1927 as a congophilic angiopathy associated with amyloid plaque in brains of patients with Alzheimer dementia,1 has an association with large and small intracranial hemorrhages (ICH). The differential diagnosis of ICH therefore includes CAA, especially in older patients or those without hypertension. The widely used Boston Criteria for diagnosis of CAA in vivo rely on the hemorrhagic characteristics of the disease.2 The pathophysiology of ICH in CAA remains uncertain. Thus, its prognosis, risk stratification, and clinical management present a challenge. Additional imaging features of CAA have contributed potential new perspectives on pathophysiology. The report of ischemic lesions in CAA may represent a novel concept for most clinicians accustomed to thinking about CAA as a hemorrhagic disease. The observation that Alzheimer dementia brains with severe amyloid angiopathy had more prevalent infarcts3–5 prompted subsequent investigations suggesting that amyloid deposition in small and medium-sized cortical vessels may play an active role in ischemia through pathologic thickening of the vessel wall, producing reduction or obliteration of the vessel lumen.6,7 Cortical superficial siderosis (cSS), easy to detect with modern MRI, is a striking and common feature of CAA. How these additional imaging features fit into a larger model of CAA remains unclear. Are they an epiphenomenon or can they teach us about the disease? In ...
Source: Neurology - Category: Neurology Authors: Tags: EDITORIALS Source Type: research

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A new study looking at links between hypertension in later life and brain health finds an increased risk of Alzheimer's hallmarks and brain lesions.
Source: Health News from Medical News Today - Category: Consumer Health News Tags: Alzheimer's / Dementia Source Type: news
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Source: TIME: Health - Category: Consumer Health News Authors: Tags: Uncategorized Alzheimer's Blood Pressure Brain healthytime Heart Disease Source Type: news
DiscussionLater life MCI and DEM were independently associated with midlife vascular risk factors and midlife cognition.
Source: Alzheimer's and Dementia: The Journal of the Alzheimer's Association - Category: Geriatrics Source Type: research
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Source: AuntMinnie.com Headlines - Category: Radiology Source Type: news
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Source: The American Journal of Geriatric Psychiatry - Category: Geriatrics Authors: Tags: Regular Research Articles Source Type: research
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Source: Current Alzheimer Research - Category: Neurology Authors: Tags: Curr Alzheimer Res Source Type: research
Fight Aging! provides a weekly digest of news and commentary for thousands of subscribers interested in the latest longevity science: progress towards the medical control of aging in order to prevent age-related frailty, suffering, and disease, as well as improvements in the present understanding of what works and what doesn't work when it comes to extending healthy life. Expect to see summaries of recent advances in medical research, news from the scientific community, advocacy and fundraising initiatives to help speed work on the repair and reversal of aging, links to online resources, and much more. This content is...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
A fair amount of research on raised blood pressure, hypertension, and its risks has been published of late. Hypertension is a downstream consequence of loss of elasticity in blood vessels. That loss of elasticity arises from the molecular damage at the root of aging, and the resulting hypertension is one of the more noteworthy mediating mechanisms by which that low-level biochemical damage is translated into structural damage to organs. Hypertension causes pressure damage to sensitive tissues, increasing the rate at which small blood vessels rupture, killing the nearby cells. This is particularly important in the brain, wh...
Source: Fight Aging! - Category: Research Authors: Tags: Daily News Source Type: blogs
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Source: AuntMinnie.com Headlines - Category: Radiology Source Type: news
Hypertension in middle age is known to increase the risk of dementia, but so far the specifics are unclear. A new study sheds fresh light on this matter.
Source: Health News from Medical News Today - Category: Consumer Health News Tags: Alzheimer's / Dementia Source Type: news
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